Which of the Following Best Describes the End of European

Which of the following best describes the end of European colonial empires? The end of European colonial empires came

A) mainly from the desire of the subject populations to be free.
B) when the European states had exhausted themselves in two World Wars and were unable to hold onto their empires.
C) when European colonial powers realized that their principle of national self-determination and basic human rights applied to others as well as Europeans.
D) when communist movements throughout the world expelled European imperialists.
E) when the United Nations pressured imperial powers to grant their colonies independence.